Search the Dictionary

or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals.

stance found in the root of the elecampane (Inula helenium), and extracted as a white crystalline or oily material, with a slightly bitter taste.

A glucoside obtained as a white crystalline substance by partial oxidation of salicin, from a willow (Salix Helix of Linnæus.)

ide accompanying helleborin in several species of hellebore, and extracted as a white crystalline substance with a bittersweet taste. It has a strong action on the heart, resembling digitalin.

A poisonous glucoside found in several species of hellebore, and extracted as a white crystalline substance with a sharp tingling taste. It possesses the essential virtues of the plant; -- called also elleborin.

A reddish brown or violet crystalline substance, C16H12O6, got from hematoxylin by partial oxidation, and regarded as analogous to the phthaleins.

A crystalline or amorphous pigment, free from iron, formed from hematin in old blood stains, and in old hemorrhages in the body. It resembles bilirubin. When present in the corpora lutea it is called hæmolutein.

The property of crystallizing hemihedrally.

Half turned round; half inverted; (Crystallog.) having a twinned structure.

terial blood, it is always combined with oxygen, and is then called oxyhemoglobin. It crystallizes under different forms from different animals, and when crystallized, is called hæmatocrystallin. See Blood crystal, under Blood.

The sulphate of iodoquinine, a substance crystallizing in thin plates remarkable for their effects in polarizing light.

A white, crystalline substance having a sweetish taste, obtained by the decomposition of hesperidin, and regarded as a complex derivative of caffeic acid.

A glucoside found in ripe and unripe fruit (as the orange), and extracted as a white crystalline substance.

Having six sides and six angles; six-sided. Hexagonal system. (Crystal.) See under Crystallization.

ce; having altitude; lifted up; raised or extended in the direction of the zenith; lofty; tall; as, a high mountain, tower, tree; the sun is high.

Of lofty structure; tall. "High-built organs." Tennyson. The high-built elephant his castle rears. Creech.

A hybrid between a stallion and an ass.

Obtained from the urine of horses; as, hippuric acid. Hippuric acid, a white crystalline substance, containing nitrogen, present in the urine of herbivorous animals, and in small quantity in human urine. By the action of acids, it is decomposed into benzoic acid and glycocoll.

added condition that if he shall retain the goods for the full period and pay all the installments of rent as they become due the contract shall determine and the title vest absolutely in him, and that if he chooses he may at any time during the term surrender the goods and be quit of any liability for future installm…

A highly exhausted glass tube with metallic electrodes nearly in contact so as to exhibit the insulating effects of a vacuum. It was used by the German physicist W. Hittorf (b. 1824).